Antistatic friction device.



J. J. OTOOLE.

ANTISTATIG FRICTION DEVICE.

APPLICATION FILED 11111.23, 1913v 1,121,198. Patented Dec.15,1914.

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JOHN J'. OTOOLE, OF NEW YORK, N. Y.

AN'IIS'IATIC FRICTION nnvrcn.

Application filed January 23, 1913.

To all whom it may concern Be it known that 1, JOHN J. OTooLn, a citizen of the United States, and a resident A New York, county and State of New "fJrk, have invented a certain new and usell Improvement 1n Antistatic Frlctlon Devlces, of wlnch the followmg 1s a full, clear,

xand exact specification.

This invention relates to a class of devices adapted for use in conjunction with printing and lithographing presses, or other machines.

My invention has for its object primarily to provide an anti-static friction device designed to be utilized for obviating the frictional adhesion of layers of paper as well as the adhesion between the fiber of silk, or wool, or other like material which is due to the tendency to attract the static electricity when being guided through various classes of machines owing to generation of the electricity by the rapidly moving parts thereof, and which causes the material to cling together, thereby preventing it from being handled with facility and frequently results in a great loss of the material and consumption of time and labor.

Another object of the invention is to provide an anti-static friction device adapted to be used upon printing and lithographing presses, looms employed for weaving fabrice, or other high tension power operated machinery of different types. This is accomplished mainly by providing a brush composed of a receiving metal rod havingstrands of metal wire projecting from its periphery, and the brush is revolved in the field of static electricity when the material is passed through the machine. The electricity is absorbed by the wires and transmitted to the rod from which the currents are discharged to one or more grounds provided between the device and the frame of the machine.

Still another object of the invention is to provide one or more transmitters adapted to convey the currents from the receiving rod to the grounds; and a further object of the invention is to provide means adapted to impart rotation to the brushfrom a re- Specification of Letters Patent.

Patented Dec. 15, 1914.

Serial No. 743,803.

volving part of the machine when in operat1on.

With these and other objects in view, the invention will be hereinafter more particu larly described with reference to the accompanying drawing, which forms a part of this specification, and will then be pointed out in the claims at the end of the description.

In the drawing, Figure l is a top plan of a printing press with one form of my antistatic friction device applied thereto. Fig. 2 is an enlarged top plan, partly broken away and partly in section, of the device. Fig. 3 is a fragmentary view, partly in section, of one of the transmitters employed in the device. Fig. t is an enlarged view, partly in detail and partly in section, of one of the couplings used in the device, and Fig. 5 is a section taken on the line TI1I of Fig. 2.

In order to illustrate the utility of my anti-static friction device it is shown in the drawing as applied to a printing, or lithographing press, as 10, adapted to print upon paper, though it will be understood that the device may be made in suitable forms for use upon other types of machines employed for handling paper as well as upon apparatus for weaving silk and wool fabrics, or the like. The press 10 is provided with the usual feed board, or table, as 11, the printing cylinder 12, the revoluble shaft 13 carrying the guide rollers let in front of the cylinder and the delivery tapes, or fly sticks, as 15, all of which are mounted in a suitable frame having metal side bars 16 and 17.

The device has a revoluble brush 18 composed of a receiving rod 19 of copper, or other material which is conductor of electricity, and projecting radially from the periphery of the rod are metal wires 20 which may be wrapped around the rod and soldered thereto. The wires :20 are also of copper, or other metal which is a conductor of electricity. The brush 18 is disposed transversely of the top of the side bars 16 and 17 of the press in proximity to the rollers 14 so as to be in front of the printing cylinder 12 and in the field of static electricity which is generated as the paper passes through the press. The brush 18 is revolved, simultaneously with the delivery of the paper from the printing cylinder 12 when the press is operated, and serving as a means to impart rotation to the brush upon the rod 19 are held two grooved pulleys 25 and 26. Upon the shaft 13 of the guide rollers 14: are held two corresponding pulleys 27' and 28. Over the pulleys 25 and 27 is guided a belt 29, and over the pulleys 26 and 28 is also directed a belt 30 so that when the rollers 14: and the shaft 13 are rotated by the'press the brush 18 will receive rotation therefrom. As the paper passes from the cylinder it will be carried over thebrush and the electricity collected in the field produced thereby as well as from the rapidly moving parts of the machine will be absorbed by the wires 20 and then transmitted to the rod 19.

F or the purpose of discharging the staticelectricity from the 'b'rushlS, 1 provide one, or more transmitters, as 31 and 32. Each of the transmitters 31 and 32 has a rod 33, which preferably corresponds in diameter with the rod 19 of the brush 18, and said rods 33 are arranged so that one end of each abuts against one of the ends of the rod 19 so that the currents of electricity will be conducted to the transmitters. The rods 33, as shown, are curved in a manner so that the opposite ends thereof are guided toward the metal side bars 16 and 17, respectively, of the frame of the press, and said ends of the rods are spaced from the side bars whereby the spaces provide grounds, as 34:

' and 35, for the discharge of the electricity.

A large part of each of the rods 33 are covered by insulation, as 36, and to hold the transmitters 31 and 32 rigidly projecting from the side bars 16 and 17 are brackets 37 and 38, each having an opening through which one of the rods 33 and its insulation are passed.

Serving to permit the brush 18 to be held to the transmitters so as to be rotated independently, I provide forms of couplings, as

39 and 39-, which are alike in formation.

Each of the couplings 39 and 39 is composed of a collar 40 which is rigidly held upon one of the ends of the rod 19 of thebrush 18, but is insulated therefrom. Upon the opposed end of each of the rods 33 of the transmitters is a stationary boss 41 having a recess 42 in one of its faces for reception of one of the collars 10, and both of the bosses are insulated from the rods 33. The recesses 12 are of sufficient diameters to permit-the collars to be freely rotatable therein as well as being formed so that the opposed ends of the rod 19 and the rods 33 will be in movable contact with each other. 'Also upon the rod 19 of the brush are sleeves 43, each having an opening therethrough of suflicient size to permit the rod to be freely revoluble therein, and. each of said sleeves is adapted to be fastened to one of the bosses are revolved by the rotation of the shaft 13 during the operation of the press, through the medium of thebelts 29 and 30 the brush 18 will be rotated independently of the transmitters 31 and 32. The paper delivere'd'from the printing cylinder of the press will pass over I the brush, and the charges of static electricity will be absorbed thereby. The currents of electricity will pass over the rod 19 of the brush to the rods 33 of the transmitters 31 and 32, and then discharged therefrom to the grounds 34. and 35. 1

In the foregoing description, I have embodied the preferred form of my invention, but I do not wish to be understood as limiting myself thereto, as I am aware that modifications may be made therein without departing from the principle, or sacrificing any of the advantages of this invention, therefore I reserve to myself the right to make such changes as fairly fall within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent':-

1. The combination with a printing press or the like, of an anti-static device adapted to collect and discharge the static charge inherent in the material to be worked, com prising in combination, two laterally eX- tending bracket members carried by said printing press or the like, an insulated dischargingmember mounted in each of said brackets, a collector rotatably journaled in said discharging member, collecting fingers mounted on said collector and extending outwardly therefrom at substantially right angles thereto, and means for rotating said collector.

2. The combination with a printing press or the like, of an anti-static device adapted to collect the static charge inherent in the material to be worked, comprising in combination, two laterally extending bracket members carried by said printing press or the like, an insulated discharging member mountedin each of said brackets, a flange mounted on each of said discharging members and each having in one face thereof a recess, said recesses facing each other, a collector, flanges,'one mounted at each end of said collector and adapted to fit in said recesses and thereby retain said collector rotatably in position, means for retaining said This specification signed and witnessed flanges in said recesses, collecting fingers this twenty-second day of January A. D. 10 mounted on said collector and extending 1913.

outwardly therefrom at substantially right 3 angles thereto, and means for rotating said JOHN O TOOLE' collector comprising a pulley mounted there- Witnesses: on adapted to be driven from said printing ROBT. B. ABBOTT, press or the like. M. DERMODY.

Copies of this patent may be obtained for he cents each, by addressing the "Commissioner of I'atents,

Washington, D. 0." 

